Granary ventilator structure



g- 4, 1931- w. M. ROWLES 1,817,270

GRANARY VENTILATOR STRUCTURE Filed July 15, 1929 Patented Aug. 4, 1931 WALTER M. ROWLES, or ONAWA, IOWA GRANARY VEN TILATOR STRUCTURE Application filed July 15, 1929. Serial No. 378,460.

The object of my invention is to provide a granary ventilator structure of simple and inexpensive construction adapted to be quickly and easily installed in granaries for 6 oats, wheats, shelled corn and other storage bins, granaries or the like, where ventilation is desirable.

More particularly, it is my purpose to provide a structure including an upright stack or flue through which air may be conducted from the interior of the granary to the exterior thereof, which stack is provided with adjustable inclined auxiliary ventilator members involving novel and convenient structure.

With these and other objects in view, my invention consists in the construction, arrangement and combination of the various parts of my structure, whereby the objects contemplated are attained, as hereinafter more fully set forth, pointed out in my claims, and illustrated in the accompanying drawings in which:

. Figure 1 is a top or plan view of a ventilator structure embodying my invention.

Figure 2 is a vertical, sectional view through a portion of a granary equipped with a ventilator structure embodying my invention. 7

Figure 3 is a horizontal, detailed, sectional view taken on the line 33 of Figure 2; and

Figure 4 is a detail, sectional view taken on the line 44 of Figure 2.

In the accompanying drawings, I have used the reference numeral 10 to indicate generally the side walls of a granary or the like having the roof 12. The roof 12 has 7 an exit pipe or opening 14 above which is 0 a spaced protector cap 16 to shed water,

snow and so forth.

Below the passage 14 and communicating therewith is an upright stack or flue 18. 'The stack 18, which for convenience, I call "a ventilator stack, is in the form of a tubular member, preferably having in its walls a plurality of regularly spaced openings 20, preferably covered by a reticulated member .22, such as screen wire or the like.

Air from the granary can pass upwardly through the flue 18 and out of the building.

In order to ventilate the grain at points substantially spaced from the flue 18, each flue 18 is preferably provided with a series of auxiliary ventilator members 24, which 5 are tubular and for convenience are preferably triangular in cross section as indicated in Figure 4.

Each auxiliary ventilator member 24 has the longitudinal passage 24a. Each auxiliary ventilator structure is arranged to communicate with one of the openings 20 in the stack 18 and is normally inclined downwardly and away from the stack as shown in full lines in Figure 2.

Each auxiliary ventilator member preferably has its lower upper part hinged to the stack 18 by means of a butt hinge 26.

The underside of each auxiliary ventilator member 24 is preferably provided with 7 a series of holes 28 which are in turn preferably covered by reticulated material, such as screen wire 30.

The lower ends of the ventilator members may be open as at 24a, Figure 2.

Hinged to the under part of each auxiliary ventilator member 24, I preferably provide a brace arm 32, which may be raised to position extending toward and to the stack 18 as shown in full lines in Figure 2, with its inner end resting upon a stop or support 34 on the stack.

The brace arms 82 are so arranged and are hinged loosely enough so that they may be swung laterally slightly to clear the supports 34 and then swing up against the members 24 so that the member can hang downwardly as shown in dotted lines in Figure 2. The members 24 will then be out of the way in case it is desired to clean out the granary or to store articles therein, where there is no grain in the building.

It will, of-course, be understood that the stacks 18 may be of proper size and that the members 24 are of proper size and length to 95 accomplish their purposes in the buildings wherein they may be installed. With a ventilator structure of this kind, grain can be properly aired during storage periods.

1 With the modern method of cutting and 100 I 1 done by, fitting their upper ends looselyin the lower end of the passage 14 and securing their lower ends temporarily.

Somechanges may be made in the details of the construction and arrangement of the parts of my improved ventilating structure without any departure from the real spirit and purpose of my invention, and it is my i intention to cover by my claims, any modified forms of structure or use of mechanical equivalents, which may be reasonably included within their scope.

I claim as my invention:

1. In a granary ventilator structure, a tubular air conducting stack having openings'in its wall, a plurality of tubular auxiliary ventilator members respectively communicating with openings "in the stack and inclineddownwardly and away therefrom.

said members having ahinged connection at the lower parts of their upper ends with the stack, and movable means for holding said members in their outwardly inclined positions, said last means being adjustable for permitting the members 'to drop downwardly alongside the stack.

' 2. In a granary ventilator structure, a tubular air conducting stack, a plurality of tubular auxiliary ventilator members respectively communicating with openings in the stack and extendmg away therefrom, said members having each a hmged connection with the stack and movable means for holding said members in their outwardly inclined positions, said last means being adustable for permitting the members to drop downwardly along the stack.

8. In a' granary ventilatorstructure, a

i tubular air conducting stack,a plurality of tubular auxiliary ventilator members respectively communicating with openings in the stack and extending away therefrom, said members havingeach a hinged connection with the stack and brace arms hinged 'to the auxiliary ventilator members and having ends engaging the air conducting stack and movable to position against the auxiliary ventilator members for permitting the n'iemberstov dropdownwardly along- 5 side the stack. 1

' 4. In a granary: ventilator structure, a

tubular air conducting stack, a plurality of tubular auxiliary ventilator -members respectively communicating with openings in the stack and extending away therefrom, said members having each a hinged connection with the stack and brace arms hinged to the auxiliary ventilator members and having ends engaging the air conducting stack,

stops on said air conducting stack with said brace arms engaging said stops and being movable upwardly away therefrom to a position against the auxiliary ventilator members for permitting the members to drop downwardly alongside the stack.

Des Moines, Iowa, June 19, 1929.

WALTER M. ROWLES. 

